We already discussed the past tense of bí on this thread. Now we'll find out how to form the past tense of regular verbs.

First, you need to know the "root", or "command" form of the verb. This is the form of the verb that you use when giving commands, and it's also the form that's listed in the dictionary. You probably already know some of these verbs:

When the subject of the verb is muid (sinn), you can treat it the same way as the above examples. Alternatively, you can tack on -(e)amar if the root has one syllable, or -(a)íomar if the root has two syllables. When using this type of combined form, you leave out the pronoun: